[U-Boot] [PATCH v5 6/8] x86: qemu: fix cpu device in smp boot

[Bin Meng]

On Mon, Jan 4, 2016 at 4:00 PM, Miao Yan <yanmiaobest at gmail.com> wrote:
> Currently, when booting with more that one CPU enabled, U-Boot scans
> 'cpu' node in device tree and calculates CPU number. This does not scale
> well as changing CPU number also requires modifying .dts and re-compiling
> U-Boot.
>
> This patch uses fw_cfg interface provided by QEMU to detect online CPU
> number at runtime, and dynamically adds 'cpu' device to U-Boot's driver
> model.
>
> Signed-off-by: Miao Yan <yanmiaobest at gmail.com>
> ---
>  arch/x86/cpu/mp_init.c  | 73 +++++++++++++++++++++++++++++++++++++++++++++++++
>  arch/x86/cpu/qemu/cpu.c |  5 ----
>  2 files changed, 73 insertions(+), 5 deletions(-)
>

[snip]

>  int cpu_qemu_bind(struct udevice *dev)
>  {
> -       struct cpu_platdata *plat = dev_get_parent_platdata(dev);
> -
> -       plat->cpu_id = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
> -                                     "intel,apic-id", -1);
> -
>         return 0;
>  }

Yep, this cpu_qemu_bind can be removed.

>

Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
Tested-by: Bin Meng <bmeng.cn at gmail.com>